When I was a junior in high school, my social studies class was History of the Americas. My teacher was Ms. A (not "Miss", not "Mrs."). She was petite with salt and pepper hair cut close to her head. All we really knew about her was that she loved cats. She started within our high school a chapter of Amnesty International. For class she made us read Howard Zinn's A People's History of the United States.
We thought she was a total nut job. It only took me 10 years to realize that she was actually quite enlightened. I hope that despite being misunderstood by her students, she kept trying.